Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 103, Issue 1-2, Pages 98-103Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2004.04.042
Keywords
aromatic compounds; thin film sensors; ethanol interference; pattern recognition
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A thin film semiconductor sensor array has been employed to discriminate several aromatic compounds in water, ethanol and wine. These compounds are aromas or off-odours usually found in wines: acetic acid, ethyl acetate, acetaldehyde, trichloroanisole (TCA) and SO2. The concentrations of these compounds were in the range of mg/l except in the case of TCA that was in the ng/l range. Principal component analysis (PCA) and radial basis neural networks (RB-NN) were performed in the data. The results showed that despite the strong influence of ethanol the system could discriminate correctly the compounds. (C) 2004 Elsevier B.V. All rights reserved.
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